{"id":184902,"date":"2024-11-10T17:05:21","date_gmt":"2024-11-10T09:05:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/184902\/"},"modified":"2024-11-10T17:05:22","modified_gmt":"2024-11-10T09:05:22","slug":"%e4%bd%bf%e7%94%a8redis%e5%af%a6%e7%8f%be%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e6%a9%9f%e5%88%b6%ef%bc%88%e5%9f%ba%e6%96%bcredis%e5%8a%a0%e9%8e%96%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/184902\/","title":{"rendered":"\u4f7f\u7528Redis\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u6a5f\u5236\uff08\u57fa\u65bcredis\u52a0\u9396\uff09"},"content":{"rendered":"<h1 id=\"%e4%bd%bf%e7%94%a8redis%e5%af%a6%e7%8f%be%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e6%a9%9f%e5%88%b6%ef%bc%88%e5%9f%ba%e6%96%bcredis%e5%8a%a0%e9%8e%96%ef%bc%89-CTtGtybmGt\">\u4f7f\u7528Redis\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u6a5f\u5236\uff08\u57fa\u65bcredis\u52a0\u9396\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u5206\u5e03\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u8cc7\u6e90\u7684\u7af6\u722d\u548c\u6578\u64da\u7684\u4e00\u81f4\u6027\u662f\u5169\u500b\u91cd\u8981\u7684\u6311\u6230\u3002\u70ba\u4e86\u89e3\u6c7a\u9019\u4e9b\u554f\u984c\uff0c\u5206\u5e03\u5f0f\u9396\u6a5f\u5236\u61c9\u904b\u800c\u751f\u3002Redis\u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u7c21\u55ae\u800c\u6709\u6548\u7684\u65b9\u5f0f\u4f86\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Redis\u4f86\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u6a5f\u5236\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%ef%bc%9f-CTtGtybmGt\">\u4ec0\u9ebc\u662f\u5206\u5e03\u5f0f\u9396\uff1f<\/h2>\n<p>\u5206\u5e03\u5f0f\u9396\u662f\u4e00\u7a2e\u7528\u65bc\u63a7\u5236\u591a\u500b\u9032\u7a0b\u6216\u670d\u52d9\u4e4b\u9593\u5c0d\u5171\u4eab\u8cc7\u6e90\u7684\u8a2a\u554f\u7684\u6a5f\u5236\u3002\u7576\u4e00\u500b\u9032\u7a0b\u7372\u5f97\u9396\u6642\uff0c\u5176\u4ed6\u9032\u7a0b\u5fc5\u9808\u7b49\u5f85\uff0c\u76f4\u5230\u8a72\u9396\u88ab\u91cb\u653e\u3002\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u6578\u64da\u4e0d\u4e00\u81f4\u6216\u7af6\u722d\u689d\u4ef6\u7684\u767c\u751f\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%81%b8%e6%93%87redis%ef%bc%9f-CTtGtybmGt\">\u70ba\u4ec0\u9ebc\u9078\u64c7Redis\uff1f<\/h2>\n<p>Redis\u662f\u4e00\u500b\u958b\u6e90\u7684\u9ad8\u6027\u80fd\u9375\u503c\u6578\u64da\u5eab\uff0c\u5177\u6709\u4ee5\u4e0b\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u9ad8\u6548\u6027\uff1a<\/strong>Redis\u7684\u64cd\u4f5c\u901f\u5ea6\u975e\u5e38\u5feb\uff0c\u80fd\u5920\u5728\u6beb\u79d2\u7d1a\u5225\u5167\u5b8c\u6210\u9396\u7684\u7372\u53d6\u548c\u91cb\u653e\u3002<\/li>\n<li><strong>\u7c21\u55ae\u6027\uff1a<\/strong>\u4f7f\u7528Redis\u5be6\u73fe\u9396\u7684\u908f\u8f2f\u76f8\u5c0d\u7c21\u55ae\uff0c\u6613\u65bc\u7406\u89e3\u548c\u5be6\u73fe\u3002<\/li>\n<li><strong>\u539f\u5b50\u6027\uff1a<\/strong>Redis\u7684\u547d\u4ee4\u662f\u539f\u5b50\u6027\u7684\uff0c\u9019\u610f\u5473\u8457\u5728\u57f7\u884c\u904e\u7a0b\u4e2d\u4e0d\u6703\u88ab\u5176\u4ed6\u64cd\u4f5c\u6253\u65b7\u3002<\/li>\n<\/ul>\n<h2 id=\"redis%e5%88%86%e5%b8%83%e5%bc%8f%e9%8e%96%e7%9a%84%e5%af%a6%e7%8f%be-CTtGtybmGt\">Redis\u5206\u5e03\u5f0f\u9396\u7684\u5be6\u73fe<\/h2>\n<p>\u4f7f\u7528Redis\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u7684\u57fa\u672c\u601d\u8def\u662f\u5229\u7528Redis\u7684SETNX\u547d\u4ee4\u3002SETNX\u547d\u4ee4\u7684\u5168\u540d\u662f\u201cSET if Not eXists\u201d\uff0c\u5b83\u7684\u4f5c\u7528\u662f\u53ea\u6709\u5728\u9375\u4e0d\u5b58\u5728\u7684\u60c5\u6cc1\u4e0b\u624d\u6703\u8a2d\u7f6e\u9375\u7684\u503c\u3002\u9019\u4f7f\u5f97\u6211\u5011\u53ef\u4ee5\u7528\u5b83\u4f86\u5be6\u73fe\u9396\u7684\u7372\u53d6\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e6%ad%a5%e9%a9%9f-CTtGtybmGt\">\u57fa\u672c\u6b65\u9a5f<\/h3>\n<ol>\n<li>\u5617\u8a66\u7372\u53d6\u9396\uff1a\u4f7f\u7528SETNX\u547d\u4ee4\u8a2d\u7f6e\u4e00\u500b\u9396\u7684\u9375\uff0c\u4e26\u8a2d\u7f6e\u4e00\u500b\u904e\u671f\u6642\u9593\u4ee5\u9632\u6b62\u6b7b\u9396\u3002<\/li>\n<li>\u57f7\u884c\u696d\u52d9\u908f\u8f2f\uff1a\u5982\u679c\u7372\u53d6\u9396\u6210\u529f\uff0c\u5247\u57f7\u884c\u9700\u8981\u4fdd\u8b77\u7684\u696d\u52d9\u908f\u8f2f\u3002<\/li>\n<li>\u91cb\u653e\u9396\uff1a\u696d\u52d9\u908f\u8f2f\u57f7\u884c\u5b8c\u7562\u5f8c\uff0c\u522a\u9664\u9396\u7684\u9375\u3002<\/li>\n<\/ol>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-CTtGtybmGt\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<pre><code>import redis\nimport time\n\nclass RedisLock:\n    def __init__(self, redis_client, lock_name, expire=10):\n        self.redis_client = redis_client\n        self.lock_name = lock_name\n        self.expire = expire\n\n    def acquire(self):\n        # \u5617\u8a66\u7372\u53d6\u9396\n        return self.redis_client.set(self.lock_name, \"locked\", nx=True, ex=self.expire)\n\n    def release(self):\n        # \u91cb\u653e\u9396\n        self.redis_client.delete(self.lock_name)\n\n# \u4f7f\u7528\u793a\u4f8b\nredis_client = redis.StrictRedis(host='localhost', port=6379, db=0)\nlock = RedisLock(redis_client, \"my_lock\")\n\nif lock.acquire():\n    try:\n        # \u57f7\u884c\u696d\u52d9\u908f\u8f2f\n        print(\"\u7372\u53d6\u9396\u6210\u529f\uff0c\u57f7\u884c\u696d\u52d9\u908f\u8f2f\")\n        time.sleep(5)  # \u6a21\u64ec\u696d\u52d9\u908f\u8f2f\u57f7\u884c\n    finally:\n        lock.release()\n        print(\"\u91cb\u653e\u9396\")\nelse:\n    print(\"\u7372\u53d6\u9396\u5931\u6557\")\n<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-CTtGtybmGt\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528Redis\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\uff1a<\/p>\n<ul>\n<li><strong>\u9396\u7684\u904e\u671f\u6642\u9593\uff1a<\/strong>\u8a2d\u7f6e\u5408\u7406\u7684\u904e\u671f\u6642\u9593\uff0c\u4ee5\u9632\u6b62\u56e0\u70ba\u7a0b\u5e8f\u7570\u5e38\u5c0e\u81f4\u7684\u6b7b\u9396\u3002<\/li>\n<li><strong>\u9396\u7684\u552f\u4e00\u6027\uff1a<\/strong>\u78ba\u4fdd\u9396\u7684\u9375\u662f\u552f\u4e00\u7684\uff0c\u4ee5\u907f\u514d\u4e0d\u540c\u696d\u52d9\u908f\u8f2f\u4e4b\u9593\u7684\u5e72\u64fe\u3002<\/li>\n<li><strong>\u91cb\u653e\u9396\u7684\u5b89\u5168\u6027\uff1a<\/strong>\u5728\u91cb\u653e\u9396\u6642\uff0c\u61c9\u8a72\u78ba\u8a8d\u7576\u524d\u9032\u7a0b\u662f\u9396\u7684\u64c1\u6709\u8005\uff0c\u4ee5\u9632\u6b62\u8aa4\u91cb\u653e\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-CTtGtybmGt\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528Redis\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u6a5f\u5236\u662f\u4e00\u7a2e\u9ad8\u6548\u4e14\u7c21\u55ae\u7684\u65b9\u6cd5\uff0c\u80fd\u5920\u6709\u6548\u89e3\u6c7a\u591a\u9032\u7a0b\u6216\u591a\u670d\u52d9\u4e4b\u9593\u7684\u8cc7\u6e90\u7af6\u722d\u554f\u984c\u3002\u901a\u904e\u5408\u7406\u8a2d\u7f6e\u9396\u7684\u904e\u671f\u6642\u9593\u548c\u78ba\u4fdd\u9396\u7684\u552f\u4e00\u6027\uff0c\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u90e8\u7f72\u60a8\u7684Redis\u670d\u52d9\uff0cServer.HK\u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u4f7f\u7528Redis\u5be6\u73fe\u5206\u5e03\u5f0f\u9396\u6a5f\u5236\uff0c\u78ba\u4fdd\u591a\u5be6\u4f8b\u74b0\u5883\u4e2d\u7684\u6578\u64da\u4e00\u81f4\u6027\u8207\u5b89\u5168\u6027\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-184902","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/184902","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=184902"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/184902\/revisions"}],"predecessor-version":[{"id":184903,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/184902\/revisions\/184903"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=184902"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=184902"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=184902"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}